Abstract
Reynolds averaged Navier-Stokes methods often cannot predict shock/turbulence interaction correctly. This may be because RANS models do not account for the unsteady motion of the shock wave that is inherent in these interactions. Sinha et al. [Phys. Fluids, Vol. 15, No. 8 (2003)] propose a shock-unsteadiness correction that significantly improves turbulence prediction across a normal shock in a uniform mean flow. In this paper, we generalize the modification to simulate complex flows using k-ε, k-ω, and Spalart-Allmaras models. In compression-corner flows, the corrected k-ε and k-ω models amplify the turbulent kinetic energy less through the shock compared to the standard models. This results in Improved prediction of the separation shock location, a delayed reattachment, and a slower recovery of the boundary layer on the ramp. In the Spalart-Allmaras model, the modification amplifies eddy viscosity across the shock, moving the separation location closer to the experiment.
Original language | English (US) |
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Pages | 7183-7193 |
Number of pages | 11 |
DOIs | |
State | Published - 2004 |
Event | 42nd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 5 2004 → Jan 8 2004 |
Conference
Conference | 42nd AIAA Aerospace Sciences Meeting and Exhibit |
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Country/Territory | United States |
City | Reno, NV |
Period | 1/5/04 → 1/8/04 |